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isoamyl alcohol/dichloromethane
Врската е зачувана во таблата со исечоци
7 резултати
Synthesis of Peroxynitrite in a Two-Phase System Using Isoamyl Nitrite and Hydrogen Peroxide
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A new method for the preparation of high concentrations of peroxynitrite (up to 1 M) is described. The synthesis uses a two-phase system and involves a displacement reaction by the hydroperoxide anion (in the aqueous phase) on isoamyl nitrite (in the organic phase). The product peroxynitrite remains
Synthesis of peroxynitrite in a two-phase system using isoamyl nitrite and hydrogen peroxide.
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A new method for the preparation of high concentrations of peroxynitrite (up to 1 M) is described. The synthesis uses a two-phase system and involves a displacement reaction by the hydroperoxide anion (in the aqueous phase) on isoamyl nitrite (in the organic phase). The product peroxynitrite remains
Spectrofluorimetric determination of dipyridamole in serum--a comparison of two methods.
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Two spectrofluorimetric methods for the determination of dipyridamole in plasma are described. The thin-layer chromatographic-fluoridensitometric method utilizes 1 ml of plasma which is extracted at pH 10 with diethyl ether-dichloromethane (80:20). The organic phase is evaporated to dryness,
The Difficult Interpretation of a Hair Test Result from a 32-month old Child: Administration of Propranolol and Quetiapine or Contamination?
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A 23-month old boy was brought to a medical center by his mother, as she noticed that the father has gripped him around the neck and this had left marks. As a result of this, a child protection medical examination was requested. However, there was a significant chronology of mental health issues in
Insight into the Chemical Diversity of Late/Ice Harvest Gewürztraminer Wine.
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Late harvest (LHW) and ice harvest (IHW) Gewürztraminer wine samples from Croatia (Ilok) were investigated. Their technological parameters, chromaticity coordinates, total phenols content, and antioxidant capacity were determined. 5-(Hydroxymethyl)furfural, xanthine, and trans-caftaric acid were
Determination of clomipramine or imipramine and their mono-demethylated metabolites in human blood or plasma by high-performance liquid chromatography.
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A high-performance liquid chromatographic method for the quantitative assay of clomipramine or imipramine and their mono-demethylated metabolites in human blood or plasma is described. After addition of the internal standards, imipramine for clomipramine, desipramine for desmethylclomipramine and
Fast fractionation of complex organic extracts by normal-phase chromatography on a solid-phase extraction polymeric sorbent. Optimization of a method to fractionate wine flavor extracts.
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Some properties of LiChrolut-EN resins as normal-phase sorbent have been studied. Retention factors using pentane as solvent range from less than 2 (ethyl esters) to more than 56 (fatty acids and vanillin). All retention factors were smaller than 2 with dichloromethane. The efficiency of the bed was
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